Improvement in middlings-purifiers



2 sheets--sheem W. N. ESSELSTYN. vMiddlings-Pu'riiers.-

Patented Nov. 3,1874.

2Sheets--Sheet 2. W. N. ESSELSTYLN. v

Middlings-Purifiers.4 No.l56,457. V Patented N0v.3,1874.

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TEE GRMHIC CO.PHQTO'LITN.39 & "rl PARK PLACE, NJA

UNITED S'IA'IE "WILLIAM N. ESSELSTYN,`0F EoErfATI/IINSON, WISCONSIN, ASSIGNOR OE ONE-HALE HIS EIGHT cro ELI r. MAY, 0F SAME PLAGE.

IMPRCVENIENT IN MlDDLlNGS-PURIFIERS.

Specification forming part of Letters Patent No. 156,457, dated November 3, 1874 application filed July 21, 1874.

To all whom it may concern:

` Be it known that I, WILLIAM N. ESSEL- STYN, of Fort Atkinson, in the county of Jefferson and State of Wisconsin, have invented a new and useful'lmprovement in Middlings- Y unitedupon the edges of the bolting-cloth on lines radial to a centralhub, and held together by a flanged hub and clamping-screws, each section-forming an independent bolting-chamber, and capable of discharging the bran and foreign substances resting on itY over the cireumference or rim of the screening-cloth, as hereinafter specified; second, in the combination of a vibrating screening-shaker, a case having an air-inlet below the shaker, and an inlet for supplying air above the shaker, an air-directing plate, and a suction-fan, whereby the middlin gs are subjected to under and up-` lper currents of air drawn in from different points by the fan, and kept separated until they meet above the screening-shaker and together bear away the light foreign matters, as will be presently described 5 third, in an in-` clined shaker or bolting-sereen of circular form, which vibrates in combination with a stationary trough or gutter for receiving the bran or other foreign substances, and with a y receptacle or-case Vhaving a door in which a discharge for the niiddlin'gs is provided, and with a revolving sweeping arm or arms on the air-conductor, and with abrush or brushes on the sweeping-arms for opening the meshes Y of the bolting-cloth, and with a scraper revolving round in the bran-gutter, all combined as hereinafter described; fourth, in the combination of a frame having a case of partly cylindrical form and partly rectangular, the

cylindrical part being open on its circumference below the shaker, a circularly-vibrating screening-shaker or bolting-screen, an inclined intermediate deck, side pockets set opposite the open sides of the, frame and above the shaker, a distributing-disk, a hopper, a feedspout, and a suction-fan; fifth, in the combination of the scourer inclosed in a case having a supplyspout, a receiving-hopper, a spreading or distributing plate, a vibrating screeningshaker inclosed in an outer case having a supply-spout, all as hereinafter described; sixth, in a combination of solid and tubular shafts, screw and worm gears, and pulleys and belts, whereby the different movable parts of the machine are supported around and operated from the central axis or shaftof the machine with variant speeds.

A Al A2 represent the frame and casing. The part A2 of the casing is cylindrical and open all around between its upper and lower edge, as indicated at a, for the admission of Vair to supply the suction-fan. The part A1 is rectangular, and has four removable pockets, A3, for the reception of bran and light matters during the Voperation of purifying middlings. The top and bottom of this case are closed tight except at those points where inlet and outlet passages are applied. Between the top of the case and its bottom (very near the top) an inclined deck, B, is constructed so that its lower edges extend a short distance into the bran-pockets, as indicated at B', and act as deflect-ors to the bran, causing it to fall down into the pocket, while the currents of air pass around them and up to the fan F1, which is on top of the case A, and is in communication with its interior by means `of a passage, b, in theA top of the case. D is an oblong discharge-passage in the floor or bottom of the case, and DPD2 is a spout divided into two channels, and furnished with an inclined regulating-valve, D3. It is arranged on the un-V der side of the bottom of the case, directly yunder the oblong opening D, so as to be in communication with the case by means of said opening, as shown. E is an air-passage at the center of the floor or bottom of the case. Gis a gutter-shaped iiange projecting from the inner side of the circular portion A2 of the case, and having a dischargepassage, e, leading from it into a spout, f, as shown. His a revolvingsolid shaft, extending up centrally through the case A1 A2 from a step, g, below the same, and passing out of the top of the case through the f an Fl and fan-case F2, and receiving on its end adriving-pulley, F3. Around this shaft a stationary brush, I, a casing, l', for said brush, a radially-grooved scouring-plate, J, a concentrating-hopper, J', a middlings-distributing disk, K, and a convex air-deiiecting plate, L, are arranged. The plate J and the disk K revolve with the shaft H, and the other parts just named are stationary, being supported by suitable bridge-trees of the frame A. Below the distributing-disk K and the plate L a circular bolting or screening shaker, M, is arranged upon a short tubular sha-ft, N, placed around the solid shaft H, and supported upon a step, g1, by means of a circular iiange, h, as shown. This bolting-screen or shaker is made up of several triangular sections, c c, each of which contains a piece of bolting-cloth, c', clamped by its edges between adjoining side bars of the respective sections by means of screws passed through the bars, as shown. The rim-piece of each section is a segment of a circle, and the several rim-pieces are placed underneath the outer ends of the frame-loars which form the sections, so that bran and other matters may freely pass of the cloth into the gutter G. The sections are formed with partitions, and the bolting-cloth is not extended to the center of the shaker, but terminates some distance short thereof, in order to form free air-circulation passages g2 g2 outside of the hub z' of the shaker, as shown. The shaker thus composed of the several sections, and constructed and united together, and stayed by means of the flanged hub fi, is keyed upon the vibrating shaft N, so as to have itsouter edge or rim stand above and overhang the trough G, as shown.

In practice, thesections mayT be made adjustable by slots and set-screws, so as to change their inclination.

O is a pitman, connected to the top of the shaker about midway of its diameter, and connected to an eccentric, O', on a vertical revolving shaft, O2. This pitman vibrates the shaker circularly when the shaft O2 s revolved. P is an inverted hollow triincated cone, placed around and fastened firmly to a short revolving tubular shaft, N', which surrounds the shaft N, and rests upon the flange h thereof. This cone is fitted over the airpassage E, and under the air-passages g2 g2, so that air entering through passage E ascends through passages g2 g2, and strikes the deiiecting-.plate L. By this device, in connection with the deflecting-plate and fan, the air is made to diffuse' the middlings over the screens as they fall from the distributing-disk K. Q Q are radial sweep-arms, attached to the shaft N' and cone P. These arms are set so as to just clear the ioor of the case A1 A2, and their office is to sweep the middlings into the double-channeled spout D1 D2. .R is a brush, applied on one of the arms Q, so as to impinge against the under side of the boltingcloth, as shown, and keep its meshes open. S is a radial arm, having a vertical sweepingplate, s', on its outer end, and extending down into the gutter G. This arm is fastened to the cone and outer shaft N', and revolves with it. y Its office is to sweep the bran which falls into the gutter to the discharge-passage e and into the spout f. T is the first feeding-spout, and T' the spout through which the coarse or unfinished middlings are returned through the machine. The spout T feeds directly into the hopper J' upon the disk K, and the spout Tl feeds the return middlings into the scouring-case I', Vand therefrom they pass into the hopper J and upon the disk K and screen M.

The shaft H is revolved by the pulley F2, and this motion is transferred by a pulley, F4, and a belt, F5, to a pulley, F6, on the eccentrics shaft O2. This motion is transmitted to the shaft N' by the shaft 02, a pulley, O2, a belt, O4, and a pulley, O5, and a shaft, W, having a worm, W1, on its end, and gearing with a screw-wheel, W2, on the shaft N'.

The worm and screw gearing give a slow rotary motion to the shaft N', and this causes the arms Q and the brush R and the scraper s', with the cone P, to revolve slowly.

The eccentric of shaft O2 receives a rotary motion, and vibrates the shaker rapidly. The central shaft receives a rapid motion, and the scouring-plate J and distributing-disk Kl revolve rapidly with it.

What'I claim as new-is# The circular shaker or bolting-screen M, made up of triangular sections c c, inclined and united upon the edges of inclined boltingcloth c' on linesradial to a central hub, and held together bya flanged hub and clampingscrews, substantially as and for the purpose described.

2. The 'combination of the vibrating screening-shaker, the case having an air-inlet, a, leading below the shaker, and air-inlets E g2 leading above the shaker, an air-directin g plate, L, and a suction-fan, substantially in the manner, and for the purpose described.

3. The combination of the vibrating inclined circular shaker M, bran-gutter Gr, case Al A2, having the passage D and spouts D1 D2, revolving sweeping arm or arms Q, brush R, and scraper S s', substantially as and for the purpose described.

4. The combination of the frame and case'A A1 A2, having the passages D and a, a circularly-vibrating shaker, M, an inclined deck, B, the side pockets A3, distributing-disk K, hopper J', feed-spout T, and a suction-fan, F1, substantially as and for the purpose described.

5. The combination, in a middlings-purifier, of the scourer I I' J, having a spout, T', the

` hopper J', ardeecting plate L, vibrating ent speeds and di'erent motions from the drivsoreen-shaker M, fan F1, `and spout T, subing-palle;r F3, substantially as and. for the purstantially in the manner and for the purpose pose set forth. herein described.

6. The combination 0f the Shafts H, N, N1, WILLIAM N- ESSELSTYN O2, and W, the pulleys and belts, and the Witnesses: A Worm W1 and screw-Wheel W2, for operating GEO. W. BURGHARD,

the different parts of the `machine With differ- HENRY OGDEN. 

